Leveled Reader 6pk Turquoise (Levels 17-18) The Bird That Could Think: Rigby PM Plus Leveled Reader 6pk Turquoise (Levels 17-18) The Bird That Could Think A crow finds some nuts, but can't crack them open. He finally drops them where cars can run over them, and waits for a red light before flying down to eat them. Grade: 2 Material Type: Resource Materials Format: Kit, 16 Pages ISBN-13/EAN: 9780763543617 ISBN-10: 0763543616 Product Code: 1221664 National/State: National Copyright Year: 2000 16 Pages